 If you liked
Pokemon Movie 03: Kesshoutou no Teiou Entei
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 ...then you might like
Mahou Shoujo Madoka★Magica Movie 3: Hangyaku no Monogatari
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Pokémon 3: The Movie and Puella Magi Madoka Magica: Rebellion are two beautiful movies that explore the story of a wish for idealized worlds and of the main characters being in said worlds.
While the former is a standalone film made for all ages and the latter is a dark sequel for an equally dark series for older audiences, both have similarities that I cannot ignore, including memorable fight scenes, some interesting shots/color choices, some tense moments (more of which is present in Madoka's case), and wonderful soundtracks (especially if you are watching the original Japanese version in Pokémon's case).